Law of Sines & Cosines

What would you use to solve this triangle?

• Law of Sines

• Law of Cosines

What would you use to solve this triangle?

• Law of Sines

• Law of Cosines

What would you use to solve this triangle?

• Law of Sines

• Law of Cosines

What would you use to solve this triangle?

• Law of Sines

• Law of Cosines

Which of the following formulas shows the Law of Cosines?

• c² = a² + b² - 4ac + cosA
• c² = a² - b² - 2abcosC
• c² = a² + b² - 2abcosC
• (cos A)/a = (cos B)/b

What are the possible criteria for the Law of Cosines?

• SSA, SSS

• SSA, ASA

• SSS, SAS

• AAS, ASA

Find m<B

• A
• B
• C
• D

Find m<A to the nearest whole degree.

Find AB

• 10
• 8
• 6.1
• 4.9

Solve for the missing angle. Round to the nearest whole number. Use one of your trig functions to solve this problem.

• 66 degrees

• 22 degrees

• .007 degrees

• 24 degrees